So the Chron Shift Carrier stats are
Code:
Shields: 850
Hull: 100
Attack: 600
Defense: 650
Max Damage: 275
And the damage formula is
Code:
Max Damage*Tanh([0.6 to 1.6]*attack/4.8*Defense)
With the carrier's values
Code:
275*Tanh([0.6 to 1.6]*attack/4.8*650)
So plugging your attack in
Code:
275*Tanh([0.6 to 1.6]*7000/3120) = 275 * [0.87 to 0.998)
So you should be killing them in 4 shots (which is the min), and averaging 10xp per hit
Code:
shots * avg XP/shot + kill bonus XP = 4 * 10 + 40 = 80
I may have done my math wrong, but you should be getting 80XP/20energy = 4XP/energy.